771130628 has 6 divisors (see below), whose sum is σ = 1349478606. Its totient is φ = 385565312.

The previous prime is 771130601. The next prime is 771130631. The reversal of 771130628 is 826031177.

It can be written as a sum of positive squares in only one way, i.e., 480837184 + 290293444 = 21928^2 + 17038^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96391325 + ... + 96391332.

It is an arithmetic number, because the mean of its divisors is an integer number (224913101).

Almost surely, 2^771130628 is an apocalyptic number.

It is an amenable number.

771130628 is a deficient number, since it is larger than the sum of its proper divisors (578347978).

771130628 is a wasteful number, since it uses less digits than its factorization.

771130628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192782661 (or 192782659 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 771130628 is about 27769.2388804591. The cubic root of 771130628 is about 917.0140384989.

The spelling of 771130628 in words is "seven hundred seventy-one million, one hundred thirty thousand, six hundred twenty-eight".